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The weight of 500 american men were taken and the sample mean was found to be 194 pounds with a standard deviation of 11.2 pounds. what percentage of men have weights between 175 and 225 pounds
Suppose that the National Labor Relations Board (NLRB) wishes to estimate the average hourly wage rate for a certain classification of skilled workers. It wishes to be 95% certain to get an estimate of sample mean within 0.05 of the truth.
Use the list of random digits below to assign 4 men and 2 women to the shark fin treatment. Read the table from left to right, first selecting the 4 men and then the 2 women. Use the numerical labels given in the chart to the names.
Find the critical value for different types of sample size and level of significance:
Change the frequencies to percentages - is there a group more likely to get high salaries.
Add titles and modify the default colors, fonts, etc., as you judge appropriate to make the scatter plot effective. (b) Describe the relationship (if any) between X and Y. Weak? Strong? Negative? Positive? Linear? Nonlinear?
How many golfers must be surveyed if we want % confidence that the sample proportion has a margin of error of 0.025?
Trying to come up with the conditional probability for a problem that deals with court cases and number of appeals and reversals for a particular judge.
If there is one-year warranty on the equipment, what proportion of the customers will actually make a valid warranty claim?
Will the margin of error for estimating the population proportion change from state to state if an SRS of 4000 tax returns is selected in each state?
Suppose that distribution is normally distributed. If worker at this fast food restaurant is chosen at random,determine the probability that worker earns more than $6.75?
Write down the advantages and disadvantages of using computer software for decision making.
Fred received the following scores for his gymnastics routine: 8.5, 7.8, 8.0, 6.8, 7.1, 7.6. To figure out his score, the judges drop the highest and lowest score and then average the rest of his scores.
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